Shasanduan ES₃^Z Development Potential Research Of Fault Block Bai58in Baimiao Gasfield

Reservoir main gas production for the three sections of paleogene shahejie formation sand f Fault Block Bai58in Baimiao Gasfield, gas reservoir has many sets of gas bearing formation, gas bearing period of large span, the largest up to750m.The main gas-bearing strata for:ES2X、ES3S、ES3Z、ES3X, gas reservoir buried depth at about2630-4090m.Complex geological structure, sedimentary microfacies and sand body development of both vertically and horizontally change is bigger.Gas reservoir buried deep, belongs to low porosity、low permeability reservoir.To show pressure difference is small, reservoir connectivity is poor, stable gas well production is difficult, seriously affect the normal production of gas well.The article around ES3Z gas reservoir development potential research of fault block Bai58, comprehensive utilization of geological characteristics, well logging interpretation, Production test and production of dynamic information data, etc. using combination of static and dynamic analysis, in the reservoir geology, gas reservoir engineering, oil and gasfield development geology, etc.For the sedimentary microfacies in the reservoir, the sand body distribution, reservoir physical characteristics, etc Research of the main reservoir in the studied area.Using volume of each small layer of ES3Z reserves calculation, and by using the well test data of well control reserves calculation.For each small layer reserves distribution and the reserves producing status are analyzed. Studies have shown that due to the less well control reserves, the use of low degree, caused the block for low of ES3Z fault block Bai58.The study on the characteristics of the gas reservoir in the area, the current well network characteristics.Put forward deployment horizontal wells in Bai59well area, can be the3small layer the unused mining reserves menber4of ES3Z; Deployment vertical wells in Bai70well area, can be the1small layer the unused mining reserves menber2of ES3Z; Deployment vertical wells in Bai70well area, can be the1small layer the unused mining reserves menber2of ES3Z; In addition, can be the4small layers not fracturing for multistage mining reserves menber3of ES3Z in Bai58well area, the1small layers not fracturing for multistage mining reserves menber4of ES3Z in Bai70well area; can be the1small layers to fill holes reserves menber1of ES3Z in Bai59、Bai71、Bai13well area; can be the1small layer fracturing reserves menber3of ES3zin Bai59、Bai71、Bai13well area；Also canfurther increase the degree of use.